Clients always assume that we work 24 hours a day and we should be on call 24 hours a day - the equivalent of dialing 911.  I have never heard of anybody dying because they couldn't reach their tax preparer at their exact moment of "crisis".  We don't answer phones after 5:00 pm or on the weekends.  That's our quiet time to try and get something done.  If the Pope calls at 5:01, he better be ready to leave a message because I'm not answering.